Operating mechanism for stump-pullers.



e. DRAZICK OPERATING MECHANISM FOR STUMP PULLERS. I APPLICATION FILED JAN. 31. I916- 1,260,883. Patented Mar. 26, 1918.

3 SHEETS-SHEET I.

G. DRAZICK.

OPERATING MECHANISM FOR STUMP PULLERS.

APPLICAT|0N FILED JAN. 31.1916.

Patented Ma1n26, 1918.

3 SHEETS-SHEET 2.

G. DRAZICK.

OPERATING MECHANISM FOR STUMP PULLERS.

1 APPLICATION FILED JAN.31. 1916.

1,260,888. Patented Mar. 26, 1918..

3 SHEETS-SHEET 3.

GEORGE DnAzIoK; or ESOANABA, MICHIGAN'.

- OPERATING MECHANISM FOR STUIVIP-PULLERS.

' Specification of Letters Patent.

Patented Mar. as, rare.

Application and January 31, 1916. Serial No. 75,299.

To all whom it mag/concern:

Be it known that I, GEORGE DRAzIoK, a

citizen of the United States, residing Escanaba, in the county of Delta and State of Michigan, have, invented certain new and] useful Improvements in Operating Mechanism for Stump-Pullers, of which the following is a specification;

M invention relates to stump extractors and more particularly the operating mechanism thereof, andis designed principally to provide a device of this character that will facilitate the easy and quick removal of the object to which it is applied.

The primary ob ect of the 1nvention is to provide a mechanism which w ll have a plurality of dogs or operatingmembers operated from a single operating lever whereby through an adjustment any one or all of the dogs may be brought into play, thereby varying the leverage obtained on the wind ing drum.

A further object of the invention is to provide a device of, this character which is simple in construction and capable of operation by manual power thereby avoiding the necessity of employing engine power.

Referring to the drawings;

Figure 1 is apview in elevation of the stump pulling machine constructed in accordance with the present invention.

Fig. 2 is a perspective view of one end of the power plug together with the means for restricting rotary movement thereof. 7

Fig. 3 is a detail view of two of the op erating dogs. 7 p 7 Fig. 4: is a perspective view of the T shaped. member securing means for the dogs.

Fig. 5 is a sectional view of thepower plug and operating dogs, showing the-T- shaped means for securing the dog. thereto. Fig. 6 is a perspectwe v1ew showmg the means for moving the operating dogs into and out of operation.

Fig. 7 is a plan view of the machine.

Fig. 8 is a plan view of the spring for holding the operating dogs under tension.

.Fig. 9-is a sectional view taken on line 3-3 of Fig. 8.

Fig. 10 is an enlarged view of the operating mechanism withthe top plate removed.

Fig. 11 is a sectional viewof the cable drum with a portion thereof broken away.

. Fig. 12is a sideelevational view of the power plug.

Fig. 13 is a wrench to be applied to the operating lever, and a Fig. l fis a fragmental. detail in section of the novel dog and the means for holding the same in disengaged position at times.

Referring more particularly to the drawings, the reference characters 5 and 6 designate upper and lower plates forming the frame of the machine, said frame being supported bymeans of wheels 1 and 2 carried on opposite ends of an axle 3 which in turn is secured to the frame. The plates are connected by bolts 7-89 and 10, the sleeves 11 being supported on their respective bolts and positioned between the upper and lower plates for holding the same in spaced relation whereby the plates form a housing for the operating mechanism to be hereinafter more specifically described.

Each of the plates 5 and 6 has an extension 14 located centrally thereof and at right angles with relation thereto, the upper extension 1% having an apertured boss pro viding a bearing for one end of a power plug 15, the upper extremity of which is squared to receive an operating wrench 62 said squared upper end extending abovethe top plate and the opposite end thereof haw ing a head 16 bearing against'the under side of the supporting bar 16 which is suit ably supported between bolts 8 and 9.

As clearly shown in Fig. 2 of the drawings, the lower end of the power plug '15 is suitably recessed and engages the cross bar 17 which has its ends extending through depending apertured lugs 18 provided on the under side of the supporting bar 16, and it will be seen that rotary movement of the power plug is, by this construction restrict ed due to the walls of the recessed portion engaging the supporting bar 17 after the power plug has been moved a quarter turn in either direction.

As seen in Fig. 12 the power plug is provided intermediate its ends with a cut out portion 19 the walls thereof being-suitably shaped to receive the curved ends. 20 of the dogs 21 and 22, tie dog 22 having an upstandinglug 23 the purpose of which will be hereinafter more fully described.

Ends of the dogs 21 and 22 is provided 7 to the construction of the securing member 25, free pivotal movement of the dogs 21 and 22 is permitted.

Loosely secured to the power plug is an operating lever 26 having one of its ends extending under the upper plate of the 7 frame and lying in a position directly above the cable drum 12.

A dog 27 is pivotally connected to said end of the operating lever 26 and has its free end positioned to engage one side of the annular toothed flange 30 provided on the upper disk of the cable drum, said toothed flange having teeth on three sides thereof, the teeth on the opposite side being engaged by the free end of do 28 which is also pivotally connected to operating lever 26, said free end extending-beyond the dogs 27, whereby when the operating lever is rocked on its pivot, one dog engages the teeth of the flange 27 in advance of the other dog to accomplish a step by step movement of the cable drum. Each of the dogs 27 and 28 is provided with a lug 27 to which the opposite ends of a spring 29 are secured, whereby said dogs 27 and 28 are at all times held in engagement with the teeth of the flange 30.

Pivotally secured to the under side of the operating lever 26, and positioned between the power plug 15 and the pivot point of dog 27 is a dog 31 which engages the upper teeth of the flange 30, while a suitable spring catch 31' is provided adjacent said dog for holding the same out of engagement with the upper teeth if it may be so desired.

A substantially semi-circular collar 33 is supported to rotate on thepower plug 15 and it is obvious that by giving said collar a'quarter turn by means of its handle 33, the dog 21 may be shoved into and out of operative position.

The bar 3 1- is pivotally supported by the depending lugs 85, one end of said bar extending at right angles with relation to the body thereof, the right angle end forming an operating lever or handle which engages within a notch 39 provided in the member 36, said handle being held in engagement with said notch by means of the coil spring 37 which is coiled around'the shank of the pin 34, the central portion thereof being looped and engaged by a set screw 88 extending into the bar 34, the ends of said spring extending upwardly in parallel relation. one of said ends engaging the dog 21 while the opposite end engages dog 22, and

it will be seen that by the tension of the spring 37 the dogs 21 and 22 are held in engagement with the outer teeth of said per and lower extensions 50 and 51 fitted in suitable openings in the upper and lower plates said upper and lower extensions 50 and 51 forming the means by which the cable drum 12 is revolubly mounted between the plates 5 and 6, the upper extensions 50 being provided with a plurality of rack teeth 52 and said cable drum 12 is provided with a central bore 53 which terminates at its upper end in a constricted passage 5-1 through which the bolt 55 passes.

The lower end of the bolt 55 is provided with a washer 56 and interposed between said washer 56 and the upper end wall of the central bore 53 is a coil spring 57.

Mounted on the upper end'of the bolt 55 adapted for inter-engagement with the aforementioned rack teeth 52 and are permitted to ride upwardly upon the rack teeth 52 through the medium of the resiliency of the coil spring 57. The upper portion of the member 58 is squared as at 60 to be received by the opening 61 in an operating wrench 62 which provides means for driv-' ing the cable drum without the use of the aforementioned dogs if desired.

The operating wrench 62 is further provided with a smaller squared opening 63 to receive the upper squared end 64 of the power plug 15, and is used as an operating means therefor in lieu of the lever 26.

One end of the lower plate 6 is provided with a hook member '65 and the opposite end of both of said plates are brought together as at 66 and are provided with registering openings 66 to receive a suitable anchoring means, not shown.

The operation of the device is as follows: 7

The frame is anchored "by any suitable means secured in the opening 66 to prevent movement of the frame under strain.

The free end of a cable is secured in any suitable manner to hook 65, and is passed through a block which in turn is secured to the stump to be pulled. The cable is passed rearwardly and is woundaround the cable drum 12, the wrench 62 beingapplied to the squared end 60 for this purpose.

After the cable has been wound upon the drum sufiicient to start operation of the machine,'the operating 'wrenehis removed from the squared'end '60 andjis "attached to the lever26.

Upon oscillatory movement of the lever 26 the dogs 27, 28 and 31 are caused to en'- gage their respective rack teeth to drive the drum in a rotary direction.

If the strain becomes ot too-great'proportion, the operating wrench is removed from the'operatinglever 26, and its smaller opening 63 is passed over the squared end 64: of the power plug 15 for the purpose of obtaining greater leverage 'to operate the drum through the medium of the dogs 21 and 22. V

lVhen it is desiredto rotateythe drum in the o osite direction for the 3111' ose of removing the cable therefrom, the handle 38 of the member 38 is grasped, and said memberis moved about its pivot until its curved end 39 engages the lug 27 on the dog 27. Upon further movement of the member 38 the portion 4E0 thereof engages the lug 23 on the dog-22 and causes the same to engage the dog 28 to move the latter as well as the dogsQiZ and 27 outof engagement with their respective'rack teeth.

By grasping the handle 33 ofthe member 33 and'moving the member 33 in the direc-' tion of the arrow A in Fig. 10, said member is caused to engage the dog 21 to move it out of engagement with its respective rack -teeth, thus releasing the cable drum and permitting the same to rotate to permit of theremoval of the cable to prepare themachine for a subsequent operation.

From the foregoing it will be understood that three different speeds are obtained 2'. 6. one when the operating wrench 62 is applied to the drum direct, one when it is applied to the rigid lever26, and a third when the operating wrench is applied to the squared end Gel ofthe power plug 15.

Having thus described theinvention, what is claimed is:

1. A stump puller comprising a pair o'f plates secured in spaced relation, a cable drum rotatable between said plates, an inner the pivoted lever on the opposite side of the power plug and adapted to engage the outer circular rack, means for maintaining the last mentioned dogs in engagement with their respectiverack teeth, means for maintaining the first mentioned dogs in engage= ni'ent with their respective rack teeth, and

and o circular rack carried by one end of the cable drum, a power plug rotatably mounted between the plates and having its upper extremity squared and projecting above the top plate, alerer pivotally carried by the power plug,a pair of dogs pivoted to the power plug and having their free ends engagingthe outer circular rack, a dog pivoted to the pivoted lever on one side of the power plug and having its free end engaging the inner circular rack, a dog pivoted to the pivoted lever on the opposite side of the power plug and adapted toengage the outer circular rack, a coillspringconnecting act of said last mentioned dogs to maintain themin engagement with their respective rack teeth, a U-shaped spring engaging the first mentioned dogs to maintain them in engagement with their respective rack teeth, and means for moving said dogs out of engagement with their respective rack teeth.

3. A stump puller comprising a pair of plates secured inspaced relation, a cable drum rotatable between said plates, an in her and outer circular rack carried by lone end of the cable drum, a power plug rotatably mounted between the plates and having its upper extremity squared and projecting above the top plate, a lever pivotally carried by the powerplug, a pair of dogs pivoted to the powerplug and having their free ends engaging the outer circular rack,a dog pivoted to the pivoted lever on one side or the power plug and having its free end engaging the inner circularrack, a dog pivoted to the pivoted lever on the opposite side of the power plug and adapted to engage the outer circularrack, resilient means for maintaining the last mentioned dogs in engagement with their respective rack teeth, and carried by the dogs, resilient means for maintaining the first mentioned dog-s in engagement with their respective rack teeth, means pivotally carried by one of the plates for disengaging three of the dogs with their respective rack teeth, and means carried by the power plug for disengaging the fourth dog with its respective rack teeth.

at. A stump puller-comprising a pair of plates 'securedin spaced relation, a cable drumrotatable betweensaid plates, an inner and outer circular rack carried by one end of the cable drum, a power plug r'otatably mounted between the plates and having its upper extremity squared and projecting above the top plate, a lever pivotally carried by the power plug, a pair of dogs pivoted to the power plug and having their 7'0 drum rotatable between saidplates, an inner free ends engaging the outer circular rack, a dog pivoted to the pivoted lever on one side of the power plug and having its free end engaging the inner circular rack, a dog p voted to the pivoted lever on the opposite side of the power plug and adapted to engage the outer circular rack, resilient means for mamtaining the last mentioned dogs in engagement with their respective rack teeth, and carried by the dogs, resilient means for maintaining the first mentioned dogs in engagement with their respective rack teeth, means pivotally carried by one of the plates for disengaging a predetermined number of the dogs with their respective rack teeth and maintaining them in said disengaged position, and means carried by the power plug for disengaging one of said dogs with its respective rack teeth, and maintaining said dog in its disengaged position.

A stump puller comprising a pair of spaced plates, means for securing the plates in spaced relation, a cable drum revolubly mounted between the plates, a platform intermediate of the plates, a power plug supported by the platform, means for limiting the rotary movement of the power plug, a

lever pivotally mounted on the power plug,

means carried by the lever and adapted to engage the cable drum to rotate the same, means carried by the power plug and adapted to engage the cable drum to operate the same, and means for operating said power plug.

6. A stump puller comprising a pair of spaced plates, means for securing the plates in spaced relation, a cable drum revolubly mounted between the plates, a platform secured intermediately ofthe plates, a power plug supported on said platform, means carried by the platform for limiting the rotary movement of the power plug, a lever pivotally mounted on the power plug, a pair of pawls carried by the lever and adapted to engage the cable drum to rotate the same, a pair of pawls carried by the power plug and adapted to engage the cable drum to rotate the same, means for retaining the first mentioned pawls in engagement with the cable drum, means for moving said pawls out of engagement with the cable drum, and means for operating the power plug. i r

7. A stump puller comprising a pair of spaced plates, a cable drum revolubly mounted between the plates, a plurality of rack teeth carried by the cable drum, a power plug mounted between the plates, a lever pivotally carried by the power plug, means pivoted to said lever and adapted to engage the rack teeth of the drum to rotate the same, means carried by the power plug copies of this patent may be obtained for and adapted to engage the rack teeth, of the drum to rotate the same, and means for operating the power plu '.v

8. A stump puller comprising a pair of spaced plates, a cable drum frevolubly mounted betweenthe plates, an inner and outer series of rack teeth carried by one end of. the cable drum, a power plugmounted between the plates, a lever pivotally carried by the power plug, means carried by the piv-.

oted lever and engaging the inner and outer series of rack teeth of the drum to rotate the drum, means carried by the power plug and engaging the outer series of rack teeth of the circular drum to rock the drum, and means for operating the power plug.

9. A stump puller comprising a pair of spaced plates, a drum revolubly mounted between the plates, an inner and outer series of rack teeth carried by one end of said drum, a power plug mounted for partial rotary movement adjacent said drum, a lever pivotally carried by the power plug, means carried by the lever for engagement with the inner and outer series of rack teeth to rotate the drum, resilient means for maintaining said rack engaging means in engagement with the rack, means for disengaging said rack engaging means with the rack, means carried by the powerplug for engagement with the outer rack teeth to roed to engage the inner and outer series of rack teeth, means carried by the pawls for maintaining them in engagement with the inner and outer rack teeth, means adapted to engage the pawls to move them out of engagement with the inner and outer rack teeth, a plurality, of pawls carried by the power plug and adapted to engage the outer series of rack teeth, resilient means engagingsaid pawls to maintain them in engage ment with the outer series of rack teeth, means carried by the power plug for moving one of saidpawls out of engagement with the outer series of rack teeth, and means for operating said power plug.

In testimony whereof I my signature.

GEORGE DRAZIGK.

five cents each, by addressing the Commissioner of Patents, Washington, D. (3,. r 

